Knockdown pipe derrick



Sept. 15, 11925 F. BRANDT xuocxnovm PIPE DERRICK 3 Sheets-Sheet 2 Filed Oct. 18, 1920 Sept 15; 1925 F. BRANDT KNOCKDOWN PIPE DERRICK Filed om. 1a, 1920 3 Sheets-Sheet 3 'Mfness;

Patented Sept 15,1925.

UNITED STATES 1,553,800 PATENT ornce.

I'OKIO BRANDT, OF KANSAS CITY, KiSSOUBI, ASSIGNOR TO THE BRANDT Gs'KRELL HGG' COKFANY, OI KA NSAS CITY, KANSAS, A. COBBORATION OF KANSAS.

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Application filed October 18, 1920. Serial No. 417,812.

To all wlwm it may concern:

Be it known that I, FOKKO BRANDT, a citizen of the United States, and resident of Kansas City, J ackson County, Missouri, have invented a certain new and useful Improvement in Knockdown Pipe Derricks, of which the following is a complete specification.

' This invention relates to derricks of thatv class composed of metal parts detachably secured together, and is more especially designed for use in the oil fields, and my object is to produce a safe and, efficient derrick of cat strength and rigidity susceptible oi ing erected or dismantled quickly and economically.

- To this end the invention consists in certain novel and useful features of construction and combinations of parts as hereinaf- 2 ter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawings, in

which?- -Figure1, is a broken side elevation of a derrick embodying the invention.

Fi ure'2, is a horizontal section taken on the line IIII of Figure 1.

Figure 3 is a vertical section on an enlarged scale,lof one of the corner posts of the derrick-,- the said post being broken away as shown.

Figure 4 is an inverted plan view of one of the post caps of the derrick.

. Fi re 5, is a top view of the topmost coup ing of one' ofzthecorner posts, and

also shows a pair of braces attached thereto and broken away.

I Fi re 6 is' a horizontal section taken on the line of VIVI of Figure 3.

Fi re 7 is a horizontal section taken on the line VII-VII of'Figure 3.

Figure 8 is an elevation of a part of one of the corner'posts of the derrick, showing the coupling between two members of such posts and braces extending from said coupling.

- Figure 9 is a fragmentary view showing more in detail hOW BhCh brace is fastened vented by an adjusting screw 15 exten ing toa post. I

Figure 10 is a detail perspective view of a part-rorming the connection between a brace and a post. Figure 11 is a detail perspective ViQW of an end'of ne of the braces.

Figure 12 is a detailed section showing the tion with the couplings.

Figure 13 is a detail of the head of one of the braces as shown in Figure 12.

Figure 14 is a detailed view of a combined washer and nut used with the brace head of Figures 12 and 13.

Figure 15 is an enlarged vertical section taken on the line XVXV of Figure 1.

Figure 16, is a section on the line XIII-XIII of Figure 15.

Figure 17 is a section on. the line XVII-XVII of Figure 16.

Referring to the drawings in detail, 1 indicates a suitable foundation of concrete or the like, and 2 a platform or base mounted upon the foundation, these parts being of any conventional or preferred type. Ar

ranged upon the foundation at equal disdrical pivot socket 7, extending at right angles to said common center. Each corner bracket is also provided with a rib'8 extending radially inward from the socket and provided with an upstanding arm or stop 9. At opposite sides of the stop, each bracket is also provided with a pair of ribs 10 terminating in cylindrical lugs 11, for a purpose which hereinafter appears. cylindrical cup 12 for each corner bracket, is provided with a depending pivot 13 engaging the socket 7. of the corresponding bracket, the arrangement being such that the pivotal engagement between the cup and bracket must be effected by endwise movement of the pivot, and to prevent such movement after the 'connection has been established, the-cup is provided with a pair of inwardly-projecting lugs 1A to engage opposite sides of the arm or stop 9, inward swinging movement of the post being reach corner post ofthe derrick, consists of a series'of aligned tubular pipes one fitting the cup. 2 and being secured or sections116, the undermost therein by the adjusting screw 15. Tubular couplings 17 connect the upper ends of the pipes or sections 16 with the lower ends of the adjacent pipes or sections 16 and have internal ribs 18 resting upon the lower pipes or sections and forming supports for the overlying pipes or sections, the chambers 19 receiving the u per ends of the pipes or sections, and the c ambers 20 receiving the lower ends of such pipes or sections. The up er end of each coupling is provided with a aring mouth 21, to facilitate the fitt ng downwardly therein of the adjacent pipe or section and the couplings are slit as at 22 and formed with lugs 23 engaged by clamping bolts 24 and securing nuts 25, as shown by Figures 3 and 6, to secure said pipes or sections firmly in place, and to prevent turning movement of the pipes or seetions they are provided with cross ins 25, projecting into the slits of the coup ingsi As a precautionary measure, fastening pins 26 are extended through said couplings and the upper end of the pipes or sections 16, and each of the couplings connecting 'adjacent pipes or sections is provided at its lower end with an inwardly-projecting perforated lug 27 and a similar outwardly projecting lug 28. Mounted upon the topmost pipes or sections are inverted sockets 29 corresponding in a measure to sockets 12 and to the couplings 17. Like the latter, they are provided with internal ribs 30 to rest upon the topmost pipes or sections and with chambers 31 to receive the same, and with cross pins 32 to make the connection secure.- The are also provided at their lower ends witi inwardly-projecting perforated lugs 33, 'corresponding to lugs 27 and outwardly-projecting perforated lugs 34, corresponding to lugs 28. Like the caps 12, they are provided with cylindrical pivot heads 35, engaging 3 corresponding sockets 36 formed in ca plates 37, and adjusting screws 38 exten ing through perforated lugs 39 of said sockets 29, engage the cap plates 37 between parallel lugs 40 thereof, these screws 38 limiting pivotal adjustment of the cap plates with respect to the sockets 29, so that regardless of the inclination of the posts, the cap plates can be secured in horizontal position.

The cap plates are providedwith perforations 41 through which they are bolted to a skeleton top frame, preferably composed of I-beams 42 and 43. A skeleton construction of pipes and couplings as described, willbe rigid and strong and cannot-possibly collapse, but to stiffen it to carry heavy loads such as is imposed upon derricks in oil pumping operations, the corner posts must be braced, and this is accomplished in the present construction b horizontal braces 44 and crossed inclined races 45. For purposes of econom in and ra idit of erection and dismant 'ng of the erric and for to the upper ends of an adjacent pair of' couplings, as shown most clearly by Figure 1. Each pipe section is provioed with a flattened head 47 at each end, so that said flattened heads may fit flatly and squarely against flattened ribs 47 formed on the coup hugs, the faces of said ribs standing at right angles to each other so that the braces of adjacent sides of the derrick shall occupy a corresponding relation when viewed in plan. The heads 47 are provided with notches 48 to hook over the bolts 46, and at their outer side, the heads are provided at opposite ends of the notches 48, with lugs 49, and at the upper endv of' the notches with outwardlyprojecting stiffening ribs 50 of semi-circular form. Flat washers 51 are provided with circular perforations 52 fitting over said ribs and the bolts 46. By this'arrangement, it is impossible for the hook ends ofth-ebraces to become disengaged from the bolts unless the washers are first displaced, and

the bolts are reinforced by said ribs in the sense that the strains and stresses imposed on the bolts are more widely distributed thereon. The washers are prevented from turning on the bolts by the provision of recesses 53 receiving the lugs 49, and the retaining nuts 54 engaging the ends of the bolts bear against said washers and the ribs 5.0. -I n Figures 12, 13 and 14, a slightly different type of construction for fastening th'e-ends of the braces to the corner posts is shown, 'this construction showing the nuts and washers integral to provide one less part to handle i-n'isecuring each end of a brace to or disconnecting it from a corner post. In accomplishing'this result, the washer is of ring form' isat 54 so as to not only fit over the-rib 50 but entirely overlie the ribs 49 so as to be capable of turning with the nut 54, the hole 54 of the ring washer like the hole of the washer, 52, receiving the rib 50.. It will thus be seen that the principle and result is the same, but that where the nut and washer are combined or in one piece,

on the plate 55 is fitted a ainst one of the braces, and a staple or -bolt 56 slidingly through said plate, one leg of the staple being riveted at its end and the 'other threaded as at 57 and engaged by a nut 58 and washer 59, proper adjustment'of said nut effecting sliding action of the staple through the plate. A sleeve 60 is mounted on the staple and terminates in a pivot or swivel head 61. A pair of oppositely-bowed jaws 62 are formed with recesses 63 conjointly forming a circular opening, and with inwardly-projectingflanges 64, the recesses receiving the enlarged portion of the pivot or swivel head 61, and the flanges fitting the neck of said head. By this arran ment, the jaws can be turned to accommo ate the angle of the braces to which the are applied, as shown in Figure 15. T e proper adjustment of the nuts 58 will then draw the staple through the plate and thus cause the crossed braces enclosed within the staple, to be clamped firmly and tightly together. Derricks for use in oil fields, must accommo'- date. certain machinery, such as the bull wheel and the calf wheel, at opposite sides, and to provide the space for the accommodation of the bull wheel and its accessories,

the crossed braces are dispensed with between the platform and the first set of braces 44. By preference, posts 66. are made of sections mounted at their lower ends in sockets 67' secured upon the platform, and the two sections, are connected by couplings 69, connected by inclined braces 70 to the corner posts 16, the space between posts 66' with steps 7 2, these steps not being detailed as they form the subject matter of a separate application.

At the top of the derrick, equipment is provided for establishing an operative connection between the power mechanism not shown at the bottom of the derrick, and the drilling mechanism, the equipment shown being constructed as follows:

7 3 indicates a trussed crane provided about midway its length with a forked bracket 74 fitting over one of the perforated lugs 33 andpivoted thereto, the lower end of the crane which is preferably inclined'as shown, being secured to one of the corresponding lugs 27, as shown in .Figure 1. Suspended from the upper end'of the crane, is a block and tackle mechanism, comprising a sheave 75 and a cable 76, the latter being extended down through the derrick and attached at one end to the power mechanism mentioned and at its other end, to the drill or the like, such as a pumping rod, not shown.

It will be noted that all of the couplings 17 have'the perforated lugs 27 "and 28 and are therefore interchangeable as re ards coupling the" corner post sections and arming a support for the crane. The outwardlyprojecting lugs 28 subserve a similar function in conjunction with a lug 34 of a top socket 29,. as at times it may be desirable to set the crane at the outer side of the derrick to lift supplies, especially where the derrick is used as a scaffold. In such case, the cor-- ner posts will preferably be vertical. The outer lugs 28 and. 34 also constitute convenient points for the attachment of guy ropes (not shown) where the greatest possible strength is necessary.

3 From the above description, it will be apparent that a derrick of this character will possess great strength and rigidity and that it can be erected economically by two men without the use of ladders other than the application of additional steps 7 2 as the erection proceeds. The only heavy portion of the derrick is the top frame, and that can be raised to position by the block and tackle mechanism of the derrick after the latter is erected to its full height, the same mechanism being employed to lower said frame should it be desired to dismantle the derrick. It will be noted that if the pipe sections 16 are of uniform length, the crossed braces 45 at different elevations, will extend at different angles as shown by Figure 1, due to the upwardly tapering form of the derrick, and for this reason the swiveled relation between the sleeves 60 and the pipeclamping jaws 62 is essential. As the construction of the various parts has been described in detail, it is not deemed necessary to recapitulate further, it being obvious that various changes may be resorted to without departing from the principle of construction involved.

I claim: a

-1. A derrick comprisingcorner posts pivotally supported at their lower ends, and leaning inwardly toward a common center, means carried by the posts adjacent their lower ends for limiting such leaning movement, a frame connecting the upper ends of the posts, and means for bracing the osts. p 2. A derrick comprising corner posts leaning inward toward a common center, means for limiting such leaning movements, caps pivotally mounted on saidposts respectively, and a frame connecting the caps.

3. A derrick comprising corner posts leaning inward toward a common center, means for limiting such leaning movements, caps pivotally mounted on said posts respectively,

' /a frame connecting these caps and means common center, thrusescrews engaging said posts and lugs to limit the leaning movement of the posts, and a frame connectingthe upper ends of the posts.

6. derrick comprising a suitable suprt provided with pivot sockets and lugs mward of such sockets, posts pivotally'engaging said sockets and leaning toward a common center, thrust screws engaging. said posts and lugs to limit the leaning movement of the posts, means to prevent movement of the posts laterally of planes radiating from such common center through the posts, and a frame connecting the upper ends of the posts.

7. A derrick comprising spaced plates provided with cylindrical sockets extending at right angles to a center common to and equal distances from said sockets, posts having cylindrical pivot heads engaging said sockets respectively, and leaning inward, means for limiting the leaning movement of the posts, means for preventing endwise movement of said pivot heads in said pivot sockets, and a frame connecting the upper ends of said posts. 7

8; A derrick comprising spaced plates provided with cylindrical sockets extending at right angles to a center common to and equal distances from said sockets, posts having cylindrical pivot heads engaging said sockets respectively, and leaning inward, means for :limiting the-leaning movement of the posts, means for preventing endwise movement of said pivot heads in said pivot sockets, cylindrical pivot heads at the upper ends of the posts, paralleling the first named pivot heads, caps having cylindrical sockets engaging said heads, means for holding the pivoted caps horizontal and against slidable movement on the top pivot heads of the posts, and a top frame secured to said caps.

9. A derrick comprising a support, four corner plates thereon, corner posts pivotally secured at their lower ends on said plates and each composed of a plurality of members and couplin connecting said members, caps pivotal y mounted on said posts 11. In a derrick, a base plate provided .with a horizontal pivot socket, and an upstandin lug, a cup pivotally connected to said-soc et and provided with a pair of lugs engaging opposite sides of the first-named lug, and a'thrust screw extending through said cup and engaging the adjacent face of said upstanding lug.

12. In a derrick, a post, an inverted cup ppon the post, provided with a pivot-head, a cap pivotally engaging said head and overlying the cup, and means for limiting pivotal movement of the cap in one direction and preventing relative rotation horizontally of the cup and cap.

13. In a derrick, a corner post comprising alined pipe sections, a coupling carried by the upper end of one of said sections and receiving the lower end of the next section above; the part of the coupling receiving the upper section being slit, and a pin bearing a fixed relation as regards said last-named vsection and projecting into said slit.

14. In a derr1ck,a corner post comprising alined pipe sections, a coup ing carried by the upper end of the lower section and receiving the lower end of the next section above and having an internal rib for abutment by the end of said upper section; the part of the coupling receiving the upper section being slit, and a pin bearing a fixed relation as re ards said last-named section and projecting lnto said slit.

15., In a derrick, a corner post comprising alined pipe sections, a coup in carried by the upper end of one of sai sections, a coupling carried by the upper end of one of said sections and receivin the lower end of the next section, said coup ing having an internal rib resting on the upper end of the lower section and abutted on its opposite side by the lower end of the upper section;

the part of the coupling receiving the u per section being slit, and a pin bearin a xed relation as regards said last-name section and projecting into said slit.

In testimony whereof, I- hereunto attach my signature.

' FOKKO BRANDT. 

